Without Touch Shift

ETC Control Module, Task

Transmission 722.6 Without Touch Shift




Input and output signals
N3/10 ME-SFI [ME] control module
N15/3 ETC control module
S16/6 Kickdown switch
S16/10 Transmission range recognition switch
X11/4 Data link connector
Y3/6b1 Transmission oil temperature sensor
Y3/6n2 RPM sensor 2
Y3/6n3 RPM sensor 3
Y3/6s1 Starter lockout contact
Y3/6y1 Modulating pressure control solenoid valve
Y3/6y2 Shift pressure control solenoid valve
Y3/6y3 1-2 and 4-5 shift solenoid valve
Y3/6y4 3-4 shift solenoid valve
Y3/6y5 2-3 shift solenoid valve
Y3/6y6 Torque converter lockup PWM solenoid valve
Y66/1 Reversing and parking lock locking solenoid




CAN databus
N3/10 ME-SFI [ME] control module
N15/3 ETC control module
N47 Traction systems control module

Task
The ETC control module (N15/3) determines the instantaneous operating condition of the vehicle and controls all gearshift sequences taking into account the ease of shifting and the driving situation. This involves receiving, converting and transmitting various digital and analog signals.

Input signals:
- Starter lock-out contact (Y3/6s1)
- Rpm sensor 2 (Y3/6n2)
- Rpm sensor 3 (Y3/6n3)
- Transmission oil temperature sensor (Y3/6b1)
- Kickdown switch (S16/6)
- Gear recognition switch (S16/10)
- W/S program switch (S16/10s2)

Input and output signals:
- Datalink connector (X11/4)

Output signals:
- Reverse/parking lock valve (Y66/1)
- Selector lever position P/N to the engine control module (ME-SFI) (N3/10) (only on detection of the selector lever position "P" or "N" on the transmission range recognition switch (S16/10) and at the starter interlock contact (Y3/6s1))

In addition there is a connection via the engine compartment bus to the:
- ME-SFI [ME] control module (N3/10)
- Traction system control module (N47)

The solenoid valves for the modulating and shift pressure and for the gearchanges are actuated by the ETC control module (N15/3). The pressure required is calculated from all input signals, adjusted to the torque to be transferred.

This involves the processing of the following data from other systems:

ME-SFI control module (N3/10) or CDI control module (N3/9)
- Engine torque
- Engine speed
- Accelerator pedal position
- Gear shift
- Engine status

Traction system control module (N47)
- Wheel speeds
- Gear shift
- Traction status

The following information is output to other systems:

ME-SFI control module (N3/10) or CDI control module (N3/9)
- Kickdown switch (S16/6)
- Engaged drive mode

Traction system control module (N47)
- Transmission ratio
- Speeds